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As a result of automaticity's enhancement, each production link common control or the examination, the metering equipment with was measured that the object the distance is far, the environmental condition is more complex. Was measured specially that the signal is weak moreover is buries deeply in the noise, how to carry on the examination to the weak signal to be valued people's more and more. The weak signal detection is an emerging technical discipline, the application scope spreads domains and so on light, electricity, magnetism, sound, heat, biology, mechanics, geology, environmental protection, medicine, laser, material. Its instrument has become in the modern science research the essential equipment. The weak signal detection's goal is withdraws the wanted signal from the noise, or enhances the examination system output signal with some new technologies and the new method the letter to be hot-tempered the ratio. this article proposed that uses the MAX038 function generator to produce the synchronized orthogonal supply oscillator, uses the double difference subtracter to realize the impedance to the voltage transformation, and realizes the electric conductance peak-to-peak value and the phase examination using the double-phase lock-in amplifier, realizes when the electrophoresis chip capacitive coupling non-contact electric conductance frequency range analysis. In recent years the capacitive coupling non-contact electric conductance examination (C4D) is one kind of new electric conductance examination technology which appears, its thorough settlement contact electric conductance examination existence's examination electrode easy to have polluted, was measured questions and so on system high field intensity voltage disturbance, already succeeded the application in the capillary vessel electrophoresis examination, has the widespread application potential. In the weak signal detection, the noise is the harassment signal which one kind did not hope, the formidable anti-noise ability which the lock-in amplifier has enables this question to be able to obtain the very good solution. In order to reduce the noise to the wanted signal influence, often uses the narrow band pass filter filtration belt external noise, enhances the signal-to-noise ratio, the lock-in amplifier is one kind uses the mutual correlation principle design the synchronized correlation detection instrument, it can examine the input signal-to-noise ratio to reach 10 weak signals. Carries on the simulation with Multisim2001, this software has the system to integrate, the contact surface to be direct-viewing highly, the simulation function is complete, merits and so on use nimble convenience.

As a result of the automaticity enhancement, each production link all common control or the examination, the metering equipment with was measured the object the distance is far, the environmental condition is complex.Was measured specially the signal is weak moreover is buries deeply in the noise, how carries on the examination to the weak signal more and more to be valued people's.The weak signal examination is an emerging technical discipline, the application scope spreads domains and so on light, electricity, magnetism, sound, heat, biology, mechanics, geology, environmental protection, medicine, laser, material.Its instrument has become in the modern scientific research the essential equipment.The weak signal examination goal is withdraws the useful signal from the noise, or enhances the examination system output signal with some new technologies and the new method the letter to be hot-tempered the ratio.
This article proposed uses the MAX038 function generator to produce the synchronized orthogonal supply oscillator, uses the double difference subtracter realization impedance to the voltage transformation, and using double-phase lock-in amplifier realization electric conductance peak-to-peak value and phase examination, when realization electrophoresis chip capacitive coupling non-contact electric conductance frequency range analysis.The capacitive coupling non-contact electric conductance examines one kind of new electric conductance examination technology which (C4D) is appears in recent years, its thorough settlement contact electric conductance examination existence examination electrode easy to have polluted, was measured questions and so on system high field intensity voltage disturbance, already succeeded the application in the capillary vessel electrophoresis examination, had the widespread application potential.In the weak signal examination, the noise is the harassment signal which one kind did not hope, the formidable anti-noise ability which the lock-in amplifier has enables this question to be able to obtain the very good solution.In order to reduce the noise to the useful signal influence, often uses the narrow band pass filter filtration belt external noise, enhances the signal-to-noise ratio, the lock-in amplifier is one kind uses the mutual correlation principle design the synchronized correlation detection instrument, it can examine the input signal-to-noise ratio to reach 10 weak signals.Carries on the simulation with Multisim2001, this software has the system to integrate, the contact surface highly intuitively, the simulation function complete, merits and so on use nimble convenience.

Causes
and
Solutions
for
the
Tendency
of
Straying
away
from
Texts
in
the
Practice
of
Chinese
Dialogue
Teaching
Abstract
Dialogue
teaching
method
is
increasingly
popular
in
educational
field.However,with
the
increasing
popularity,
it
draws
more
attention
when
it
comes
to
the
problems
emerging
in
teaching
practice.
Dialogues
among
teachers,
students
and
texts,
are
the
basic
elements
in
dialogue
teaching,
but
we
often
find
some
of
dialogue
teaching
methods
stray
away
from
the
original
texts.
Reasons
for
this
are
partly
the
miscomprehension
of
the
true
meaning
of
dialogue
teaching
and
the
lack
of
understading
of
the
texts
on
teachers’
part
;
and
partly
the
lack
of
good
learning
habits
for
this
method
on
students’
part.
Therefore,
solution
for
this
should
be
made
regarding
both
teachers
and
students
in
order
to
alter
this
tendency.
Key
Words:
dialogue
teaching
method;
straying
away
from
texts;
causes;
solution
解释:
第一，时代精神不能用zeitgeist，这个词是指“特定时期的时代精神”，如“启蒙时期的时代精神”，而不是摘要中的“与时俱进”义。我把句子意译了。
第二，“游离文本”应该有专业翻译，建议你问一下你的导师。
第三，“对策”，不是“敌人来攻，我们要想回击的对策”义，或“上有政策下有对策”义，所以不能用countermeasure。这里是指解决方法，所以用solution。
第四，最重要的一点，不能看到汉语词就用金山词霸查然后放上去，这个时候还是要深入理解词义，然后再选择合适的词语。注意，很多时候英汉词语是不对应的。
最后，祝你论文完成顺利!